/**   
 * 项目名：化工企业安全生产信息化管理平台
 * 日期：    2020-03-01 22:19:08  
 * Copyright (c) 2015- -版权所有     
 */
package com.joysuch.wwyt.edu.service.impl;

import javax.transaction.Transactional;


import com.joysuch.wwyt.edu.bean.EduExamCourseDetailBean;
import com.joysuch.wwyt.edu.bean.EduExamCourseEditBean;
import com.joysuch.wwyt.edu.bean.EduExamCourseListBean;
import static com.joysuch.wwyt.edu.bean.EduExamCourseListBean.SearchEduExamCourse;

import com.joysuch.wwyt.core.common.util.PageDataUtils;
import com.joysuch.wwyt.core.common.util.PageDataUtils.PageDataConvert;
import com.joysuch.wwyt.core.service.BizCodeGeneratorFacade;
import com.joysuch.wwyt.core.exception.BusinessRestrictionsException;

import com.querydsl.core.types.Predicate;
import com.joysuch.wwyt.edu.entity.EduExamCourse;
import com.joysuch.wwyt.edu.entity.dsl.QEduExamCourse;
import com.joysuch.wwyt.edu.repository.EduExamCourseDao;
import com.joysuch.wwyt.edu.service.EduExamCourseService;

import com.querydsl.core.types.ExpressionUtils;
import com.querydsl.core.types.Predicate;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;

@Service
@Transactional
public class EduExamCourseServiceImpl implements EduExamCourseService {

    @Autowired
    private EduExamCourseDao dao;
    @Autowired
    private BizCodeGeneratorFacade bizCodeGeneratorFacade;

    @Override
    public EduExamCourse add(EduExamCourseEditBean entity) {
        EduExamCourse content  = new EduExamCourse();
        BeanUtils.copyProperties(entity, content, "id");
        return dao.save(content);
    }

    @Override
    public void update(EduExamCourseEditBean entity) {
        EduExamCourse content = dao.findById(entity.getId()).get();
        BeanUtils.copyProperties(entity, content, "id");
        dao.save(content);
    }

    @Override
    public Page<EduExamCourseListBean> findByPage(Pageable page , SearchEduExamCourse condition) {
        Predicate predicate = prepareListSearchCondition(condition);

        Page<EduExamCourse> data =  predicate == null? dao.findAll(page) : dao.findAll(predicate, page);

        return PageDataUtils.convertPageData(data, new PageDataConvert<EduExamCourseListBean, EduExamCourse>() {

            @Override
            public EduExamCourseListBean convert(EduExamCourse f) {
                EduExamCourseListBean bean = new EduExamCourseListBean();
                BeanUtils.copyProperties(f, bean);
                return bean;
            }

        });
    }

    private Predicate  prepareListSearchCondition(SearchEduExamCourse condition) {
        Predicate p = null;
        QEduExamCourse q = QEduExamCourse.eduExamCourse;
        if (condition.getExamId() != null) {
            p = ExpressionUtils.and(p, q.examId.eq(condition.getExamId()));
        }
        if (condition.getCourseId() != null) {
            p = ExpressionUtils.and(p, q.courseId.eq(condition.getCourseId()));
        }
        if (condition.getIndexNo() != null) {
            p = ExpressionUtils.and(p, q.indexNo.eq(condition.getIndexNo()));
        }
        return p;
    }
    @Override
    public void delete(Long id) throws BusinessRestrictionsException {
        //校验业务逻辑是否允许删除。如本数据被其他业务关联，删除后导致其他业务不可用。不能删除时将抛出业务异常
        checkBussinessRestrictions(id);
        dao.deleteById(id);
    }

    /**
     * 校验业务逻辑是否允许删除。如本数据被其他业务关联，删除后导致其他业务不可用
     * @param id 要删除的业务ID
     * @throws BussinessRestrictionsException 抛出的业务异常
     */
    private void checkBussinessRestrictions(Long id) throws BusinessRestrictionsException {

    }

    @Override
    public EduExamCourse findById(Long id) {
        return dao.findById(id).orElse(null);
    }

    @Override
    public EduExamCourseDetailBean getById(Long id) {
        EduExamCourse entity = findById(id) ;
        if(entity == null) {
            return null;
        }
        EduExamCourseDetailBean bean = new EduExamCourseDetailBean();
        BeanUtils.copyProperties(entity, bean);
        return bean;
    }

}
